Should the Daleks and Cybermen be capped to once per Doctor?
I think there is some merit to this idea. The Cybermen and Daleks go so overexposed it became a classic example of the inverse ratio between the amount of screen time and the amount of quality.
Shoving a Dalek episode in every year meant they ran out of stuff for them to do. And both Daleks and Cybermen became unthreatning. Like comper Parting of the Ways to Victory of the Daleks or Asylum of the Daleks. There is no mence no more because their can't be. In Magcians apprentice they are just background props. The Cybermen just became joke villians with the Dr blowing up the 7th Cyber Fleet in 2 seconds. They are hopless in Closing Time. Nightmere in Sliver tries to make them scary again. But they don't feel like Cybermen and the idea that they can upgrade while being damaged is nonsense. Not to mention the endless the Master hires the Cybermen as his his goons.
Honestly Resolution and Haunting were good because they gave them something to do. Even if we look passed the idea that a Dalek can be cut in three and glued back together like a jigsaw.
Not helped by the fact that the writers will keep giving them new powers just for this episode then recton it in the next one. The Weeping Angles are maybe the worst for this.
Restricting it to once per doctor maybe twice if said doctor sticks around for 5 years. Would force them to write a good episode and stop creative fatiague. 4 met the Daleks and Cybermen 3 times in total in 7 years. Dose anyone think his era suffered for it? Even then Destiny is a coast off Genesis and Revenge is like a 60s hold over script.
So if it were up to me the rules for them should be
once per doctor / once every three years. Quality > quantiy
no more team episodes with them, Daleks and Cybermen should be the full focus on every episode they are in. Use the Sontarons as henchmen enemies for the Master or some other baddie.
Make the Dr and script take them seriously. The Daleks were behind the Time War and the Cybermen killed Adric and cause his frist regeneration. The Dr should take them seriously. I am 100% fine with the Dr goofing around when its monster of the week no cares about. Not Daleks and Cybermen.
Have tha Daleks and Cybermen talk to each other. I don't understand why in 60s Who the Daleks talk to each other but later on they bearly talk. Everyone loves the Cyberleader and Luitenent scenes. No reason why they can't.
give them proper ranks. One thing I liked about Victort was the class system. There is no reason why Daleks should be a monolith. Having a class system gives them a sense of culture.
Give the Cybermen names again. They had them in the Tenth Planet no reason why they can't have names again, you do this and have them have ranks, its not a controdiction.
Have them kill a load of people. This shouldn't need to be explained by Daleks should go full Eric Saward on the guest cast. Because that is their goal. Same with the Cybermen.
Don't make them too invulnerable. It should be possible to kill and Dalek or Cyberman but difficult. I kinda hate it when they are all killed in one fell swoop, when nothing could kill them before (I'm looking at you Nightmere in Silver). Think how in Earthshock its possible to kill a Cyberman but diffcult. Or the Daleks in Remmberance.